151 lines
5.9 KiB
C
151 lines
5.9 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2008 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#ifndef TR_BENCODE_H
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#define TR_BENCODE_H 1
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#include <inttypes.h> /* for int64_t */
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#include <string.h> /* for memset */
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typedef struct tr_benc
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{
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#define TYPE_INT 1
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#define TYPE_STR 2
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#define TYPE_LIST 4
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#define TYPE_DICT 8
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char type;
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union
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{
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int64_t i;
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struct
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{
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int i;
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int nofree;
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char * s;
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} s;
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struct
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{
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int alloc;
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int count;
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struct tr_benc * vals;
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} l;
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} val;
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} tr_benc;
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/* backwards compatability */
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typedef tr_benc benc_val_t;
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int tr_bencParse( const void * buf,
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const void * bufend,
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tr_benc * setme_benc,
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const uint8_t ** setme_end );
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int tr_bencLoad( const void * buf,
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int buflen,
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tr_benc * setme_benc,
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char ** setme_end );
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void tr_bencPrint( const tr_benc * );
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void tr_bencFree( tr_benc * );
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int tr_bencDictFindInt( tr_benc * dict, const char * key, int64_t * setme );
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int tr_bencDictFindDouble( tr_benc * dict, const char * key, double * setme );
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int tr_bencDictFindStr( tr_benc * dict, const char * key, const char ** setme );
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int tr_bencDictFindList( tr_benc * dict, const char * key, tr_benc ** setme );
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int tr_bencDictFindDict( tr_benc * dict, const char * key, tr_benc ** setme );
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tr_benc * tr_bencDictFind( tr_benc * dict, const char * key );
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tr_benc * tr_bencDictFindType( tr_benc * dict, const char * key, int type );
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tr_benc * tr_bencDictFindFirst( tr_benc * dict, ... );
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/* convenience functions for building tr_benc structures */
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static inline void tr_bencInit( tr_benc * val, int type )
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{
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memset( val, 0, sizeof( *val ) );
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val->type = type;
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}
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#define tr_bencInitStr( a, b, c, d ) \
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_tr_bencInitStr( (a), ( char * )(b), (c), (d) )
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void _tr_bencInitStr( tr_benc * val, char * str, int len, int nofree );
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int tr_bencInitStrDup( tr_benc * val, const char * str );
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void tr_bencInitRaw( tr_benc * val, const void * src, size_t byteCount );
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void tr_bencInitInt( tr_benc * val, int64_t num );
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int tr_bencInitDict( tr_benc * val, int reserveCount );
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int tr_bencInitList( tr_benc * val, int reserveCount );
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int tr_bencListReserve( tr_benc * list, int count );
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/* note that for one key-value pair, count should be 1, not 2 */
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int tr_bencDictReserve( tr_benc * dict, int count );
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tr_benc * tr_bencListAdd( tr_benc * list );
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tr_benc * tr_bencListAddInt( tr_benc * list, int64_t val );
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tr_benc * tr_bencListAddStr( tr_benc * list, const char * val );
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tr_benc * tr_bencListAddList( tr_benc * list, int reserveCount );
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tr_benc * tr_bencListAddDict( tr_benc * list, int reserveCount );
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tr_benc * tr_bencDictAdd( tr_benc * dict, const char * key );
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tr_benc * tr_bencDictAddDouble( tr_benc * dict, const char * key, double d );
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tr_benc * tr_bencDictAddInt( tr_benc * dict, const char * key, int64_t val );
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tr_benc * tr_bencDictAddStr( tr_benc * dict, const char * key, const char * val );
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tr_benc * tr_bencDictAddList( tr_benc * dict, const char * key, int reserveCount );
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tr_benc * tr_bencDictAddDict( tr_benc * dict, const char * key, int reserveCount );
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tr_benc * tr_bencDictAddRaw( tr_benc * dict, const char * key, const void *, size_t len );
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char* tr_bencSave( const tr_benc * val, int * len );
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char* tr_bencSaveAsJSON( const tr_benc * top, int * len );
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int tr_bencSaveFile( const char * filename, const tr_benc * );
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int tr_bencLoadFile( const char * filename, tr_benc * );
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int tr_bencGetInt( const tr_benc * val, int64_t * setme );
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int tr_bencGetStr( const tr_benc * val, const char ** setme );
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int tr_bencIsType( const tr_benc *, int type );
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#define tr_bencIsInt(b) (tr_bencIsType(b,TYPE_INT))
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#define tr_bencIsDict(b) (tr_bencIsType(b,TYPE_DICT))
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#define tr_bencIsList(b) (tr_bencIsType(b,TYPE_LIST))
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#define tr_bencIsString(b) (tr_bencIsType(b,TYPE_STR))
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/**
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*** Treat these as private -- they're only made public here
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*** so that the unit tests can find them
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**/
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int tr_bencParseInt( const uint8_t * buf,
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const uint8_t * bufend,
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const uint8_t ** setme_end,
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int64_t * setme_val );
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int tr_bencParseStr( const uint8_t * buf,
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const uint8_t * bufend,
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const uint8_t ** setme_end,
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uint8_t ** setme_str,
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size_t * setme_strlen );
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/**
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***
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**/
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int tr_bencListSize( const tr_benc * list );
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tr_benc * tr_bencListChild( tr_benc * list, int n );
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#endif
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